/Engine/Source/Runtime/MovieSceneTracks/Public/Systems/MovieSceneMaterialParameterSystem.h
Evaluation: Visits any BoundMaterial with the supported parameter names and either a BlendChannelOutput component or no BlendChannelInput, and applies the resulting parameter to the bound material instance.
class UMovieSceneMaterialParameterSystem : public [UMovieSceneEntitySystem](API\Runtime\MovieScene\EntitySystem\UMovieSceneEntitySystem)
TObjectPtr<UMo...
DoubleBlenderSystem